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791篇 您的检索式:作者名="Li YX"
    题名 作者 年代 出处 被引量
1Synthesis and Structure of A Novel Caged Bicyclic Phosphate Flame Retardant显示文摘A novel caged bicyclic phosphate flame retardant tri(1-oxo-2,6,7-trioxa-l-phosphabicyclo [2.2.2] octane-methyl) phosphate (Trimer) was synthesized from 1-oxo-4-hydroxymethyl-2,6,7-trioxa-l-phosphabicyclo [2.2.2] octane (PEPA) and phosphorus oxychloride in this paper. Its structure was characterized by elemental analysis, FTIR, 1H NMR, 31P NMR and X-ray diffraction analysis.Li, X Ou, YX Zhang, YH Lian, DJ 2000Chinese Chemical Letters2000,11,10:28
2CT arterial portography and CT hepatic arteriography in detection of micro liver cancer显示文摘AIM To recognize the characteristic findings of micrQliver cancer (MLC) and to evaluate the effect of CT arterial portography (CTAP) and CT hepatic arteriography (CTHA) in diagnosis of MLC. METHODS Between April 1996 to December 1998, CTAP and CTHA were performed in 12patients with MLC, which were not detect ed byconventional CT examinations. After CTHA, 3 mL-- 5 mL mixture of lipiodol, doxorubic in andmitomycin C were injected into hepatic arterythrough the catheter, and then followed up by CTthree or four weeks later (Lipiodol CT LP-CT).RESULTS A total of 22 micro--tumors (0 .2 cm 0.6 cm in diameter ) were detected in 12patients, which manifested as small perfusiondefects in CTAP and small round enhancement inCTHA. The rate of detectability of CTAP andCTHA was 68.2% (15/ 22) and 77.3% (17/ 22)respectively, and the rate of the simultaneoususe of both procedures reached 86. 4% (19/ 22 ).All micro--tumors were demonstrated as punctatelipiodol deposit fool in LP--CT. After LP--CT, theelevated serum level of Q-fetoprotein (AFP)dropped to the normal level in all patients.CONCLUSION The CTAP and CTHA are the mostsensitive imaging methods for detecting microIiver cancer. Confirmed by the change of theelevated serum AFP level and lipiodol depositfool in LP-CT, small perfusion defects in CTAPand punctate enhancement in CTHA may suggestmicro--liver cancer.Li L Wu PH Mo YX Lin HG Zheng L Li JQ Lu LX Ruan CM Chen L 1999World Journal of Gastroenterology1999,5,3:16
3High expression levels of IKK alpha and IKK beta are necessary for the malignant properties of liver cancer显示文摘IKK-NF-kappa B signaling is regarded as an important factor in hepatocarcinogenesis and a potential target for liver cancer therapy.Therefore,in this study,we analyzed the expression of mRNAs encoding components and targets of NF-kappa B signaling including IKK alpha,IKK beta,RANK,RANKL,OPG,CyclinD3,mammary serine protease inhibitor(Maspin),CyclinD1,c-FLIP,Bcl-x1,Stat3,Cip1 and Cip2 by real-time PCR in 40 patients with liver cancer.After statistical analysis,7 indices including IKK alpha,IKK beta,RANK,Maspin,c-FLIP,Cip2 and cyclinD1 were found to show significant differences between tumor tissue and its corresponding adjacent tissue.When IKK alpha and IKK beta were downregulated in the hepatocellular carcinoma(HCC) cell lines of MHCC-97L and MHCC-97H in vitro,the numbers of BrdU positive cells were decreased in both IKK alpha and IKK beta knockdown cells.Levels of apoptosis were also investigated in IKK alpha and IKK beta knockdown cells.The growth of HCC was inhibited in the subcutaneous implantation model,and lung metastatogenesis was also significantly inhibited in the kidney capsule transplantation model.Downregulation of IKK alpha and IKK beta in HCC cultured in vitro revealed that increased Maspin,OPG and RANKL expression was associated with metastasis of HCC.These findings were associated with downregulation of Bcl-XL and c-FLIP,which may be the reason for increased apoptosis.The therapeutic effect of IKK alpha and IKK beta downregulation depends on extent of NF-kappa B inhibition and the malignant nature of the HCC.We anticipate that IKK-targeted gene therapy can be used in the treatment of HCC,a cancer that is notoriously resistant to radiation and chemotherapy.Jiang,RQ Xia,YX Li,J Deng,L Zhao,L Shi,J Wang,XH Sun,BC Nanjing Med Univ,Liver Transplantat Ctr,Affiliated Hosp 1,Nanjing,Jiangsu Prov,Peoples R China Nanjing Med Univ,Ctr Canc,Nanjing,Jiangsu Prov,Peoples R China 2010南京医科大学学报(自然科学版)2010,30,5:13
4Identification of tumor associated single-chain Fv by panning and screening antibody phage library using tumor cells显示文摘AIM:To study the feasibility of panning and screeningphage-displaying recombinant single-chain variablefragment (ScFv) of anti-tumor monoclonal antibodiesfor fixed whole cells as the carriers of mAb-bindingantigens.ME,ODS: The recombinant phage displaying librariesfor anti-colorectal tumor mAb MC3Ab, MC5Ab andanti-gastric tumor mAb MGD1 was constructed.Panning and screening were carried outby means ofmodified fixation of colorectal and gastric tumor cellsexpressed the mAb-binding antigens. Concordance ofbinding specificity to tumor cells between phageclones and parent antibodies was analyzed. Thephage of positive clones was identified withcompetitive ELISA, and infected by E.coli HB2151 toexpress soluble ScFv.RESULTS:The ratio of positive clones to MC3-ScF-MC5-ScFv and MGD1-ScFv were 60 %, 24 % and 30 %. MC3-ScFv had Mr 32 000 confirmed by Western blot. Thespecificity to antigen had no difference between 4positive recombinant phage antibodies and MC3Ab.CONCLUSION:The modified process of fixing wholetumor cells is efficient, convenient and feasible to panand screen the phage-displaying ScFv of anti-tumormonoclonal antibodies.Nie, YZ He, FT Li, ZK Wu, KC Cao, YX Chen, BJ Fan, DM 2002World Journal of Gastroenterology2002,8,4:12
5Diagnosis of bile duct hepatocellular carcinoma thrombus without obvious intrahepatic mass显示文摘AIM:To study the diagnosis of hepatocellular carcinoma(HCC)presenting as bile duct tumor thrombus with no detectable intrahepatic mass.METHODS:Six patients with pathologically proven bile duct HCC thrombi but no intrahepatic mass demonstrated on the preoperative imaging or palpated intrahepatic mass during operative exploration,were collected.Their clinical and imaging data were retrospectively analyzed.The major findings or signs on comprehensive imaging were correlated with the surgical and pathologic findings.RESULTS:Jaundice was the major clinical symptom of the patients.The elevated serum total bilirubin,direct bilirubin and alanine aminotransferase levels were in concordance with obstructive jaundice and the underlying liver disease.Of the 6 patients showing evidence of viral hepatitis,5 were positive for serum alpha fetoprotein and carbohydrate antigen 19-9,and 1 was positive for serum carcinoembryonic antigen.No patient was correctly diagnosed by ultrasound.The main features of patients on comprehensive imaging were filling defects with cup-shaped ends of the bile duct,with large filling defects presenting as casting moulds in the expanded bile duct,hypervascular intraluminal nodules,debris or blood clots in the bile duct.No obvious circular thickening of the bile duct walls was observed.CONCLUSION:Even with no detectable intrahepatic tumor,bile duct HCC thrombus should be considered in patients predisposed to HCC,and some imaging signs are indicative of its diagnosis.Long XY Li YX Wu W Li L Cao J. 2010World Journal of Gastroenterology2010,16,39:11
6A novel therapeutic approach to 6-OHDA-induced Parkinson's disease in rats via supplementation of PTD-conjugated tyrosine hydroxylase显示文摘Wu SP Fu AL Wang YX Yu LP Jia PY Li Q Jin GZ Sun MJ 2006中国生物学文摘2006,20,10:9
7Improved technique of vascular anastomosis for small intestinal transplantation in rats显示文摘AIM To establish a new improved vascularanastomotic technique to simplify the surgicaltechnique and increase the survival rate of smallintestinal transplantation in rats.METHODS The graft removed en blocconsisted of entire small intestine,portal veinand aortic segment with superior mesentericartery.The graft was perfused in situ and thegut lumen was irrigated during the operation.Heterotopic small bowel transplantation wasperformed by microvascular end-to-sideanastomosis between the donor aortic segmentwith superior mesenteric artery and the recipientabdominal aorta,and by the formation of a'Cuff'anastomosis between the donor portalvein and the recipient left renal vein.Both endsof the grafts were exteriorized as stomas.RESULTS A total of 189 intestinaltransplantations were performed in rats,33 ofwhich were involved in the formal experimentalgroup,with a survival rate of 84.8%.Theaverage time for the donor surgery was 80min±10min;for graft repair 10min±3min;and forrecipient surgery 95min±15min.The averagetime for the arterial anastomosis and the veinanastomosis was 18min±5min and 1min,respectively.The warm ischemic time and coldischemic time were 22min±5min and less than60min,respectively.The whole operation wascompleted by a single surgeon,the operativetime being about 3 hours.CONCLUSION The vascular anastomosis used in this study could simplify surgical technique,reduce the operative time and elevate thesurvival rate of small intestinal transplantationin rats.Li YX Li JS Li N 2000World Journal of Gastroenterology2000,6,2:8
8脂蛋白a水平与冠状动脉粥样硬化性心脏病患者复发事件的关系显示文摘脂蛋白a是否是冠状动脉粥样硬化性心脏病(冠心病)患者复发性心血管事件(recurrent cardiovascular events,RCVEs)的预测因子尚未确定。本研究旨在探讨脂蛋白a对一个真实世界、大规模首诊心血管事件(cardiovascular event,CVE)患者队列中RCVEs的潜在影响。方法:本实验为多中心的前瞻性研究,纳入经血管造影诊断的冠心病并经历首次CVE的患者7562例。入院时测量所有患者的脂蛋白a浓度.周卫(译) 叶鹏(校) Liu HH Cao YX Jin JL Zhang HW Hua Q Li YF Guo YL Zhu CG Wu NQ Gao Y Xu RX Hong LF 2020中华高血压杂志2020,28,5:5
9Magnetic resonance imaging of hepatocellular carcinoma induced by diethylnitrosamine in Sprague-Dawley rats显示文摘Diethylnitrosamine (DENA) is able to induce various benign and malignant liver lesions in rats with a high success rate and a low mortality rate. It provides a more appropriate model that better simulates the various lesions occurring in humans than the usual model of tumor implantations. The aim of the present study was to evaluate MRI liver examination in Sprague-Dawley(SD) rats as a routine method to detect hepatocellular carcinoma (HCC) nodules induced by DENA and to follow up their growth. METHODS:Hepatic carcinogenesis was induced in 80 male SD rats using oral DENA solution. All animals were imaged for liver tumor detection with a 1.5 Tesla magnet (Siemens Sonata,Erlangen, Germany) using correspondence scan parameters and a radio-frequency knee coil. Macroscopic examinations were performed along the axial MRI sections to evaluate magnetic resonance imaging (MRI) findings, and histopathological assessment was also performed. RESULTS:No false negative results were obtained on MR images. Hepatic tumors in 72 rats were confirmed macro-scopically and 68 rats were detected by MRI till the 20th week. The smallest and the largest nodules detected by MRI were 2 mm and 37 mm in diameter respectively. The agreement rate of MRI with macroscopic observation was 39. 1% and 97. 4% respectively for 2 mm to 5 mm and more than 5 mm nodules. CONCLUSIONS:The hepatic tumor induced by DENA provides a more representative range of tumors for imaging diagnosis and interventional treatment. MRI is the best approach for scrutinizing pathological changes of rat livers in the period of observation.Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China (Li X, Zhou XP and Guan YS) Department of Radiology, Ruijin Hospieal. Shanghai Second Medical University, Shanghai 200025 , China. Current address:Astra Zeneca R & D Alderley, Macclesfield SK 10 4 TG U. K. (Wang YX) 2005Hepatobiliary & Pancreatic Diseases International2005,4,3:3
10Rb-Sr isotope dating of silicalite from the Dajiangping massive sulfide ore deposit,Guangdong Province显示文摘THE Dajiangping pyrite ore deposit located in the Yunfu County of Guangdong Province is asuper-large pyrite ore deposit. Its age has not been defined so far because of the absence of fos-sil. This note is to use Rb-Sr isotope dating of silicalite to constrain the age of the ore depositand place special emphasis on its geological significance.Wang, HI Li, HY Wang, YX Wang, HH 1997Chinese Science Bulletin1997,42,23:2
11Efficient ruthenium-catalyzed racemization of secondary alcohols:application to dynamic kinetic resolution 显示文摘 Elzinga MJ Li YX 2002Tetrahedron:Asymmetry2002,13,8:1
12A novel mutation of the DSRAD gene in a Chinese family with dyschromatosis symmetrica hereditaria显示文摘Li M Jiang YX Liu JB 2004Clin and Exp Dermatol2004,29,:1
13Use of High Strength Steel Sheet for Lightweight and Crash-Worthy Car Body显示文摘Li YX Lin ZQ Jiang AQ 2003Materials and Design2003,24,3:1
14Dysregulation of the Hedgehog pathway in human hepatocarcinogenesis显示文摘Sicklick JK Li YX Jayaraman A 2006Carcinogenesis2006,27,4:1
15Comparison of survival and embryonic development inhuman ooCytes cryopreserved by slow- freezing and vitrification显示文摘Cao YX Xing Q Li L 2009Fertil Steril2009,92,:1
16Radiotherapy as primary treatment forstage I (E)and II (E)nasal natural killer/T-cell lymphoma显示文摘Li YX Yao B Jin J 2006J Clin Oncol2006,24,1:1
17Three-dimensional reconstruction of registered and fused Chinese visible human and Patient MRI Images 显示文摘Li L Liu YX Song ZJ 2006Clin Anat2006,19,3:1
18Desferoxamine precon-ditioning protects against cerebral ischemia in rats by inducing expressions of hypoxia inducible factor 1 alpha and erythropoietin显示文摘Li YX Ding SJ Xiao L 2008Neurosci Bull2008,24,2:1
19Japanese encephalitis in mainland China 显示文摘Wang HY Li YX Liang XF 2009Jpn J Infect Dis2009,62,5:1
20SMAD signaling,a novel pathway of angiotensinⅡ-induce renal fibrosis显示文摘Huang XR Li JH Chen YX 2001J Am Soc Nephrol2001,12,:1
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